Gear and wheel puller



' IN VEN TOR A TTORNEYS April 13 1926.

W. l. WOOLDRIDGE GEAR AND WHEEL FULLER Filed Sept. 20, 1923 w\ 4 A iWITNESSES v WiLLiam I Woo Zd'rd ge BY ,5 fiil/knr raiser-An. 131926.;

; W LLIAM-IRVING woonnnmenor new YORK, N. Y.-

GEAR AND EEL FULLER;

, f Application filed SentemberZO, 1923. sexier No. 663,842

j To all wkonrz't may concemt:

Be it known that 1, WILLIAM I. WooL- nnmen, a citizen of the United$tates, and a resident of the city of New York, borough i of Manhattan,in the county. and State of New York, have invented 'a' new and ImprovedGear and Wheel Puller, of whlch the following is a full, clear, andexact descri tion. i it y invention has for its-object to provide a gearand wheelpuller constructed to removea gear or wheel byscrew means froma shaft on which the gearmr wheel is H mounted,- after the gearorwheelhas been loosened by'striking a member of the gear or wheelpullerin contact with an-end of the shaft, the said membe'rhavin'g'alimited movement relative to the screw means to prevent injury to thesaid screw means when the said member is struck. 1

Additional. objects, of the invention will appear in the followingspecification, in

preferred form of my invention is which the 7 described,

te'rs refer to similar "in'which- Figure 1 is a side elevation,partially .in section, showing how a gear or wheel puller is d'erated; i

lgure 2 is a sectional view on; the line W 2 -2 of Figure ligand i partsin all-the views,

,Figures 3 and 4 are views illustrating different' types of grippingmembers.

5 -By referring to therdrawings it will be seen that the invention isconstructed with a yoke 10, having a threaded opening 11,vin whichmeshes the outer thread12 on a sleeve Pivoted in'openings in-the yoke 10there are levers 21, one set of arms; 22. of these I levers having griping ends 23vwhich are adapted ;to grip, t e gear or. wheel 19.as.illustrated in Figure 1 of the drawings. The

other arms of the levers 21 havecam surfaces 25 wine are engaged by-acam'26 ona i with the sleeve- 13 in the position indicated In thedrawings'similar reference charac- '13. Disposed in this sleeve 13 thereis a nut 27 which meshes with thc outer thread I l2-onthe sleeve 13.-'-The outer end 28 of the sleeve13 is shaped in th e form of a nut sothat it may be turned by awrench.

, In using the gear and wheel puller the nut 27 is turned to permit ofthe movement of the arms 21 so .that' the gripping ends may bepositioned toembrace the gear or wheel 19; When thishas been done thenut 27 isturnedhome and its cam surface 26 will, engage the camsurfaceson the levers 21 to press the arms 24'of the levers 21outwardly,

which will move the arms 22 inwardly'so that the gear or wheel '19 willbe embraced by the gripping ends'23 as has been stated When the grippingends 23 of the levers 21 have a firm*hold onj thefgear ,or wheel 19,

spindle 14 engages the end of the shaft 18 in Figure 1 of the drawings,the outerhead 15 of the spindle 14 is hit-with a, hammer to a I,

loosen the "gear or wheel 19 from the shaft" l8f'y. g

It will beunderstood'that inasmuch as the spindle 14 is free to movelongitudinally of the sleeve '13 for a limiteddistance, that thestriking of the head 15 of the spindle 14 and the consequent movementof'the spindle 14 'will not act on the-outer thread 12 of the spindle-13or on the threaded opening 11 of theyoke 10 to- 1njure these threads.When the gear or wheel 19 has been loosened from the shaft 18, said gearor wheel 19 may be removed by the application of a wrench to thesurfaces 28 of the sleeve 13, it being and the point-17 of the heads 16of the understood that the rotary movement of the rearwardlyinas'much asthe'sleeve '13 en gages the head 16, which, in turn, engages the end ofthe shaft 18, which is fixed. This said sleeve 13 will cause the yoke 10to move-.1

rearward -m6ve-ment,' of the yoke '10 will.

carry with it the levers 2-1 with the gripping ends 23',whih'will removethe gear or wheel 19 in a manner readily understood. When desired thenut 27 maybe removed from the position on the sleeve 13 shown in Figure1 of the drawings and be employed on the sleeve 13 adjacent the head-16for'ertgaging i a ontwardly.

Iclaim: a v In a gear andwheel puller, a yoke haythe arms 22 or. otherarms to press the arms mg an opening, a sleeve with an, outer thread theopening, means mounted on the yoke for engaging a gear wheel, a nutmeshing with the threaded sleeve and having -means for operating thefirst-mentioned means, and a spindle disposed in the sleeve and freetherefrom for moving longitudinally thereof when struck by a hammertheouter thread meshing in the opening, a spindle in the sleeve and freetherefrom for moving longitudinally thereof when struck by a hammer thespindle being adapted to engage an end'of a s1 1aft,a lever pivoted tothe yoke having means for gripping a gearwheel and a nut meshing withthe threaded sleeve:

and having cam means for engaging the lever to operate the latter.

3. In a gear and wheel puller, a yoke having a threaded opening, asleeve having an outer thread meshing in the opening, a spindle in thesleeve and free therefrom for moving longitudinally thereof when struckby a hammer the spindle being adapted to engage an end of a shaft. headson the spindle beyond the sleeve for limiting the movement of thespindle relatively to the sleeve,- levers pivoted to the yoke havingmeans for gripping a gear wheel, and a nut meshing with the threadedsleeve and having -cam means for engaging the levers to operate thelatter.

WILLIAM IRVING VVOOLDRIDGE.

